function onAddItem(item, tileitem, pos)
	if(item.itemid == 7956) then -- Waterpolo ball
	    doTransformItem(item.uid, 7711)
          doSendMagicEffect(pos, CONST_ME_WATERSPLASH)	
		doSendMagicEffect(pos, CONST_ME_WATERSPLASH)
	  return TRUE
         elseif(item.itemid == 7711) then
				
           return TRUE
           else
             doRemoveItem(item.uid)
	       doSendMagicEffect(pos, CONST_ME_LOSEENERGY)
             return TRUE
      end
end